External Floating Roof Tank Pontoon

Single deck pontoon type floating roof 9 figure 1 5.

External floating roof tank pontoon.

Double deck floating roof tank 13 figure 1 8. Pontoon type floating roofs are the most economical type of floating roofs in the market. The principal types of floating roof designs which are installed in tanks which store crude and middle distillate products are summarized below. Tanks with external floating roofs are used primarily to contain liquids with high vapor pressures when the vapor emissions from fixed roof tanks would exceed the standards set by the local jurisdiction.

Storagetech storage tank internal floating roofs storagetech has been proudly innovating designing manufactiring and installing external and internal pon. Double deck type floating roof 10 figure 1 6. Types of floating roofs in storage tanks. Types of fixed roof tanks 8 figure 1 4.

The deck of single deck floating roofs shall be designed to be in contact with the storage liquid during normal operation regardless of the service. It consists of an open topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid. Ergil storagetech internal floating roofs which minimize the evaporation losses of stored products such as jet fuels gasoline diesel and crude oil can be supplied as aluminium or stainless steel. These are categorized as external floating roofs which are designed to meet requirements of api standards 650 appendix c.

Because the flexible floating roof deck can float up and down to close to the liquid level gas space above the liquid level can be greatly reduced thereby greatly reducing the evaporation. Floating roof is the core component of floating roof storage tank which is divided into two types. The roof rises and falls with the liquid level in the tank. Main two types of floating roof tanks single deck floating roof in single deck roof which is also called pontoon roof the buoyancy is derived by the pontoons according to api 650 3.

Single deck floating roof tank 12 figure 1 7. Storage tank capacities and levels 15.